The Aquascape Container Water Garden Filter provides ideal mechanical and biological filtration for Aquascape Patio Ponds birdbaths and other container water gardens holding up to 50 gallons of water. The included filter sponge and activated carbon insert ensure proper filtration while the magnetically-driven motor technology makes the filter extremely energy efficient quiet and easy to maintain. The durable pre-filter water intake design prevents clogging and reduces pump maintenance providing years of trouble-free operation. The included adjustable spray bar allows for proper surface movement and oxygenation while the integrated suction cups simplify installation. An included venturi aerator can be installed to supply supplemental aeration. Aquascape is passionate about the products we produce providing unique products designs and features that stand above the competition.